Standardizing reverberation-measured Mg II time-lag quasars, by using the radius-luminosity relation, and constraining cosmological model parameters

@article{Khadka2021StandardizingRM,
  title={Standardizing reverberation-measured Mg II time-lag quasars, by using the radius-luminosity relation, and constraining cosmological model parameters},
  author={Narayan Khadka and Zhefu Yu and Michal Zajavcek and Mary Loli Martinez–Aldama and Bożena Czerny and Bharat Ratra},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2021}
}
We use 78 reverberation-measured Mg II time-lag quasars (QSOs) in the redshift range 0.0033 ≤ z ≤ 1.89 to constrain cosmological parameters in six different cosmological models. The basis of our method is the use of the radius-luminosity or R − L relation to standardize these 78 Mg II QSOs. In each cosmological model we simultaneously determine R − L relation and cosmological model parameters, thus avoiding the circularity problem. We find that the R − L relation parameter values are… Expand
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